NG Absolute Form Validator - V14.1

RequiredWith

The Required With rule makes a field mandatory only when at least one of a set of other named fields is present — required_with:requiredWith_1,requiredWith_2 means the current field must be filled in if either requiredWith_1 or requiredWith_2 has a value. It's a good fit for grouped optional information where filling in part of the group implies the rest is needed too, like requiring a 'city' field as soon as either a 'street address' or 'postal code' field has been entered. As with the other conditional-required rules, every field being watched needs to be defined or initialized before the field that depends on it.

#Directive Code Snippet
<!DOCTYPE html> 
<html lang="en"> 
    ...
    <form (ngSubmit)="onSubmit(form)" #form="ngForm">
		<input requiredWith="<TARGET_FIELDS>" type="text" name="<name>" [(ngModel)]="<name>" #<name>="ngModel">
        <ng-absolute-validator [formInstance]="<name>"></ng-absolute-validator>
	</form>
    ...
</html>
#Chain Rule Code Snippet
<!DOCTYPE html> 
<html lang="en"> 
    ...
    <form (ngSubmit)="onSubmit(form)" #form="ngForm">
		<input rule="required_with:<TARGET_FIELDS>" type="text" name="<name>" [(ngModel)]="<name>" #<name>="ngModel">
        <ng-absolute-validator [formInstance]="<name>"></ng-absolute-validator>
	</form>
    ...
</html>
#Reactive Form Code Snippet
//component.ts 
export class ReactiveComponent{

	public form  !: FormGroup;

  	constructor(
      	private fb : FormBuilder,
		private rv : ReactiveValidator,
	){this.generteForm()}

	generteForm(){
		this.form = this.fb.group({
			<name> : ['',this.rv.map('required_with:<TARGET_FIELDS>',<CUSTOM_MESSAGE>)]
		})
	}
}

//component.html 
<!DOCTYPE html> 
<html lang="en"> 
    ...
    <form [formGroup]="form">
		<input type="text" name="<name>" formControlName="<name>">
        <ng-absolute-validator [formInstance]="form.get(<name>)"></ng-absolute-validator>
	</form>
    ...
</html>